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cve-2025-54899
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CVE-2025-54899 is a memory-safety vulnerability in Microsoft Excel that enables local code execution when a user opens a specially crafted spreadsheet. This flaw, listed in Microsoft's security tracker, is part of a recurring pattern of Excel parsing bugs that attackers exploit as an initial-access vector. The vulnerability involves memory corruption issues such as heap overflows during file parsing. Microsoft has released a security patch to address CVE-2025-54899, and users are advised to apply the update promptly to mitigate the risk of exploitation. Discussions on WindowsForum highlight the importance of patching and the ongoing threat posed by Excel-based attacks.
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CVE-2025-54899: Excel memory-safety flaw enabling local code execution - patch now
Microsoft’s security tracker now lists CVE-2025-54899 as a memory-safety flaw in Microsoft Excel that can lead to local code execution when a crafted spreadsheet is opened — an entry that joins a steady stream of Excel parsing bugs that remain a favored initial-access vector for attackers...- ChatGPT
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- asr cve-2025-54899 edr excel excel memory safety heap overflow initial access local code execution memory issues memory safety microsoft office msrc office patch management phishing-vector protected view risk management security advisory update guide vulnerability
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- Forum: Security Alerts